I currently have a memory leak I can find no work around for. I have lodged a bug report with a repro here: https://bugzilla.xamarin.com/show_bug.cgi?id=34756
While Xamarin are getting around to even confirming it I wondered if someone here could also validate they are getting the same issue I describe and if they have any possible work around.
The project I am just finishing after 8 months of development is crashing after 5 - 10 minutes of usage with this single memory leak. I am moving on to another project soon (just over a week away), so I really want to resolve this one to complete out the project. Its the only issue I have remaining on WinPhone, otherwise I would have a nicely checked off UAT 
Even if you can just confirm you can reproduce the bug based on what I described would be a great help to confirm it is related to the Xamarin Framework.
@ylemsoul - sorry for tagging you in, but you seem to be very experienced with Windows Phone. I believe this is the one related to our previous Image memory leak discussions.